矿用电机车制动压力控制与匹配策略研究

Research on Brake Pressure Control and Matching Strategy of Mine Electric Locomotive

针对矿用电机车在传统的人力-机械耦合式制动条件下,控制精度低且不满足智能、安全和节能需求等问题,提出一种基于并行制动的制动压力分时控制方案。对电-液联合制动系统进行结构设计,通过测试得出并行制动和分时制动条件下的液压缸响应特性。采用Car Sim仿真软件,分别在直线和转弯条件下研究矿用电机车的制动效果。结果表明,压力分时控制策略相比于并行控制可实现更高的制动效率,在相同的动力源条件下节能效果更显著,横向摆动速度的变化幅值更小。

In view of the problems of low control accuracy and not meeting the demands of intelligence,safety and energy saving under the condition of traditional manual mechanical coupling braking,a time-sharing control scheme of braking pressure based on parallel braking was proposed. The structure of the electro-hydraulic combined brake system was designed,and the response characteristics of the hydraulic cylinder under the condition of parallel braking and time-sharing braking were obtained by testing. Using Car Sim software,the braking effect of mine electric locomotive was studied under the condition of straight line and turning. The results show that the pressure time-sharing control strategy can achieve higher braking efficiency than the parallel control. Under the same power source, the energy saving effect is more significant,and the change amplitude of the lateral swing speed is smaller.